Improvement in low-water detecters



. any form 5 but the bell-crank form being the UNITED STATES PATENTOFFICEQ JULES DELERY, OF ST. BERNARD PARISH, LOUISIANA.

IMPROVEMENT IN LOW-WATER DETECTERS.

Specification forming part of Letters Patent No. 56,017, dated July 3,1866.

To all whom 'it may concern:

Be it known that I, JULES DELERY, of the parish of St.Bernard,in theState of Louisiana, have invented a new and useful Machine or Appendageto Steam-Boilers for Preventing Explosions thereof, whichlentitle theSteam- Boilers Warden#7 and I do hereby declare that the following is afull and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists of a machine or apparatus connectedwith the gagecock oi' the boiler on which iit is intended to operate soas to not only inform, but notify, the engineer and all competentpersons within hearing distance around of the relative condition of thewater and steam contained in the boiler and all changes which may takeplace therein, thus enabling the engineer to remedy in time anyapproaching danger.

To enable others skilled in the art to make use of my invention, I willproceed to describe its construction.

The parts colored black or dark are castiron, the blue wrought-iron, andthe yellow brass, the difference of material being used principally forconvenience of manufacturing.

I attach to the boilers head a lever, M, of

most convenient, I 4use it in preference. One end of it is flat andcircular, so as to rest with more security on the stem of the gage-cockN. The other end carries a hole, in which is fastened a wire, la, whichis worked as will be explained.l

The machine is bolted to any part of the engine-room, either to thesides, the ceiling, or the iioor, or to the engine or boiler, so it beconvenient to connect it by a band to a drum on the shaft of a smallengine used exclu sively for that purpose, and whose steam-pipe shouldhe in constant opened communication with the boiler, so that it shouldbe set in motion as soon as there is a sufficiency of pressure of steamgenerated in the boiler to run it.

The cone-drum A being worked by the band S, the screw B on pivot Pworking in the cogs of wheel C, every revolution of drum A causes wheelG to revolve the thickness of one tooth. If there be thirty cogs onWheel O, it will make one revolution when drum A makes thirty. The screwD on pivot J, working in wheel E, carrying-also thirty teeth, causes itto make one revolution when drum A makes nine hundred. Now, when drum Amakes ninety revolutions in one minute the shaft F and clog or catch Gr,fastened to the end of it by a key or set-screw, will make onerevolution in ten minutes. llhe clog G, encountering in its revolutionthe end of bellcrank lever L, causes it to move and draw wire l,attached to bell-crank lever H, which pulls wire K and causes bell-cranklever M to bear at T on the stem of gage-cock N, forcing it inward andopens its valve, allowing a jet of water or steam to escape, theshrilling noise of which notifies the engineer and all persons ofexperience within hearing distance of the condition of the water andsteam within the boiler. This operation, being renewed every ten orifteen minutes for the length of time of each revolution of clogs G, maybe regulated according to wishes by the number of revolutions given tocone-drum A by the band S. This works not only as a water gage or guard,but also as a steam-gage for an engineer.

Each one of the levers L L L may be connected to two or more gage-cocks,if desired, and one-gage-cock on each boiler, being operated upon inthis manner, is sufficient to give all necessary warning.

With this machine it is not the engineer who has to watch the boiler. Itis the boiler itself which warns the man of what it needs. It is amechanical and safe guard, constantly on the lookout, and on whose partthere can be no fear of either carelessness, negligence, forgetfulness,or preoccupation, the two last of which may cause accidents to any humanbeing, however attentive, careful, and active one may be, and for thisreason I entitle it the steam-boilers warden.77

It is evident that this apparatus will enable the engineer to preventthose dreadful explosions which so often occur with our highpressuresteam-boilers, even of the best constructions and perfectly sound, whichare caused by insufficiency of water, and which parts composing mymachine, :und the combiar'e the most numerous, the effect of which nonation of the device with the steam-boilers, boiler can be made strongenough to resist, no in the manner and for the purpose described.

more than it could be made-to stuud the force J. DELERY. of a mine ofgunpowder set ou fire. Vituesses:

What I claim is- JNO. B. VINET, The general arrangement of ull thedifferent THEOD. LANAWAY. "Y

